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Cat it1 it2 - PowerPoint PPT Presentation

More Shell Programming

More Shell Programming. Control Flow. The shell allows several control flow statements: if while for. if. The if statement works mostly as expected: $ whoami clinton $ cat test7 #!/bin/sh user=`whoami` if [ $user = "clinton" ] then echo "Hi Bill!" fi

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More Shell Programming

More Shell Programming. Learning Objectives: To learn the usage of environment (shell) variables in shell programming To understand the handling of command line arguments To illustrate more useful commands in shell programming using examples. More Shell Programming. Table of Content

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More Shell Programming

Software Tools. More Shell Programming. Keyword Shell Variables. The shell sets keyword shell variables. You can use (and change) them. HOME The path to your home directory PATH Directories where the shell looks for executables USER Your login name

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Cat it1 it2 - PowerPoint PPT Presentation

More Shell Programming

More Shell Programming

More Shell Programming